EPS-HEP2019

Impact of magnetic field on beta-processes in partially transparent medium

15 Jul 2019, 18:30

1h 30m

ICC - Arteveldeforum (Ghent)

Poster Neutrino Physics Wine & Cheese Poster Session

Speaker

Dr Alexandra Dobrynina (P.G. Demidov Yaroslavl State University)

Description

An influence of a magnetic field on beta-processes is investigated in a partially transparent medium of the inner part of a supernova envelope. Inside this part, an electron-positron plasma is ultra-relativistic. As for neutrinos, they are not in the thermodynamic equilibrium with the medium. We obtain simple analytical expressions for reaction rates of beta-processes as well as energy and momentum transferred from (anti)neutrinos to the medium. In numerical estimations we use results from the spherically-symmetric supernova simulations with the progenitor mass of 27 $M_{\odot }$. We show that the effect of the magnetic field on the macroscopic quantities mentioned above is relatively small. Therefore, neutrino-transport calculations of the supernova explosion can be performed ignoring the magnetic field.